Characterizing barriers to care in migraine: multicountry results from the Chronic Migraine Epidemiology and Outcomes – International (CaMEO-I) study - Lanteri-Minet, Michel; Leroux, Elizabeth; Katsarava, Zaza; Lipton, Richard B.; Sakai, Fumihiko; Matharu, Manjit; Fanning, Kristina; Manack Adams, Aubrey; Sommer, Katherine; Seminerio, Michael; Buse, Dawn C. (The Journal of Headache and Pain, 2024)